Functional notation
It is proposed that this article be deleted because of the following concern:
If you can address this concern by improving, copyediting, sourcing, renaming, or merging the page, please edit this page and do so. You may remove this message if you improve the article or otherwise object to deletion for any reason. Although not required, you are encouraged to explain why you object to the deletion, either in your edit summary or on the talk page. If this template is removed, do not replace it. This message has remained in place for seven days, so the article may be deleted without further notice. Find sources: "Functional notation" – news · newspapers · books · scholar · JSTOR Nominator: Please consider notifying the author/project: {{subst:proposed deletion notify|Functional notation|concern=Possible copyright violation. This is just cut-and-pasted from the reference.}} ~~~~Timestamp: 20130830222257 22:22, 30 August 2013 (UTC) Administrators: delete |
In functional notation, a letter, as a symbol of operation, is combined with another which is regarded as a symbol of quantity. Thus denotes the mathematical result of the performance of the operation upon the subject .[1] If upon this result the same operation were repeated, the new result would be expressed by , or more concisely by , and so on. The quantity itself regarded as the result of the same operation upon some other function; the proper symbol for which is, by analogy, .[2] Thus and are symbols of inverse operations, the former cancelling the effect of the latter on the subject . and in a similar manner are termed inverse functions.[3]
![{\displaystyle f[f(x)]}](https://wikimedia.org/api/rest_v1/media/math/render/svg/5f54da4ffd78a97e0493340583f3157015327436)
